CN217477049U - Chemical detection vehicle filter ventilation device - Google Patents

Abstract

The utility model discloses an automobile-used filtration ventilation unit of chemical detection, install in the outside protection box of filtration ventilation mechanism including filtration ventilation mechanism and the cooperation that two symmetries were set up, the fixed intercommunication of protection box front end has the controller. The utility model provides a chemical detection vehicle canister ventilation device, which is provided with a protective box body, when in actual use, a canister ventilation mechanism and the protective box body can be assembled outside a cabin, and after the assembly is finished, the canister ventilation mechanism is installed in the cabin through a first mounting plate; through the setting of straining poison ventilation mechanism, can purify the back replacement to the air outside the cabin to pass through two-way fan discharge cabin outside with the pollutant behind the heater heating, the extension is strained the poison time, is favorable to going on of cabin personnel's sampling.

Description

Chemical detection vehicle filter ventilation device

Technical Field

The utility model belongs to the technical field of the essence protective apparatus, especially, relate to an automobile-used filtration ventilation unit of chemistry investigation.

Background

The working environment of the chemical detection vehicle is a toxic and harmful gas environment, when the vehicle encounters nuclear, biological and chemical attacks or passes through a contaminated area, the pressure in the cabin is slightly higher than that outside the cabin, so that toxic substances outside the cabin are effectively prevented from entering the cabin, meanwhile, personnel in the cabin need to breathe air, a certain amount of air exchange is needed between the inside and the outside of the cabin, and a positive pressure three-proofing system is needed for realizing the purpose of ensuring that the polluted air outside the cabin is clean and breathable when entering the cabin. The positive pressure three-proofing system is installed in the chemical detection vehicle, the space in the vehicle is narrow, the devices need to be installed one by one, and the installation is inconvenient; in addition, the positive pressure three-proofing system has short toxin filtering time, so that the sampling of personnel in the cabin is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art and provide a filtering and ventilating device for a chemical detection vehicle, which can be assembled outside a cabin and a protective box body by arranging the protective box body, and the filtering and ventilating device and the protective box body are installed in the cabin through a first installation plate after the assembly is finished; through the setting of straining poison ventilation mechanism, can purify the back replacement to the air outside the cabin to pass through two-way fan discharge cabin outside with the pollutant behind the heater heating, the extension is strained the poison time, is favorable to going on of cabin personnel's sampling.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

a chemical detection vehicle toxin filtering and ventilating device comprises two symmetrically-arranged toxin filtering and ventilating mechanisms and a protective box body which is arranged outside the toxin filtering and ventilating mechanisms in a matching mode, wherein the front end of the protective box body is fixedly communicated with a controller;

the toxin filtering and ventilating mechanism comprises a second filter box, a first connecting pipeline, a first filter box and a bidirectional fan which are sequentially communicated from bottom to top, wherein one end of the second filter box, which is far away from the first connecting pipeline, is fixedly communicated with the second connecting pipeline, one end of the second connecting pipeline, which is far away from the first connecting pipeline, is fixedly communicated with a trapezoidal air port, and one end of the bidirectional fan, which is far away from the first filter box, is fixedly communicated with a third connecting pipeline;

a ventilating filter disc is fixedly arranged in the first connecting pipeline, a heater is fixedly arranged in the center of the top of the ventilating filter disc, a temperature sensor is fixedly arranged at the left end of the top surface of the ventilating filter disc, and the temperature sensor and the heater are in signal connection with a controller;

the protective box body comprises a first bearing box and a second bearing box which are symmetrically arranged, a plurality of first connecting frames are arranged between the first bearing box and the second bearing box in a matching mode, a sealing gasket is arranged between every two adjacent first connecting frames in a matching mode, a second connecting frame is fixedly arranged outside the sealing gasket, and the first connecting frames are connected in the second connecting frames in an adhesion mode;

the first bearing box comprises a third connecting frame and a first bottom plate fixedly arranged at the lower end of the inner surface of the third connecting frame, and first mounting holes matched with the second connecting pipeline are formed in the left end and the right end of the lower bottom surface of the first bottom plate;

the second bearing box comprises a fourth connecting frame and a second bottom plate fixedly arranged at the upper end of the inner surface of the fourth connecting frame, and second mounting holes matched with the third connecting pipeline are formed in the left end and the right end of the top surface of the second bottom plate;

the centers of the left side surface and the right side surface of the fourth connecting frame are both fixedly provided with connecting frames, and one end of each connecting frame, which is far away from the fourth connecting frame, is fixedly connected with the third connecting frame;

a second mounting plate is fixedly mounted at the lower end of the outer surface of the second filter box, first mounting frames are fixedly mounted on the front side surface and the rear side surface of the second filter box, a square-shaped frame is mounted at the top of each first mounting frame in a matched mode, a second mounting frame is mounted at one end, far away from the first mounting frame, of the square-shaped frame in a matched mode, the second mounting frame is identical in structure to the first mounting frame, and the second mounting frame is fixedly mounted at the front end of the first filter box;

two-way fan surface upper end fixed mounting has the third mounting panel, the equal fixed mounting in both ends has the fourth spliced pole around the two-way fan, the U template is installed in the cooperation of fourth spliced pole surface front end, the blind end and the second mounting bracket fixed connection of U template.

Furthermore, a valve is fixedly mounted at one end, close to the trapezoidal air opening, of the second connecting pipeline, and the valve is electrically connected with the controller.

Furthermore, first mounting plates are fixedly mounted at the upper ends of the left side surface and the right side surface of the fourth connecting frame, and third mounting holes are formed in the front end and the rear end of the top surface of each first mounting plate;

and a fourth mounting hole is formed in the center of the top surface of the first mounting plate, a differential pressure gauge is installed in the fourth mounting hole in a matched mode, and the differential pressure gauge is in signal connection with the controller.

Furthermore, the connecting frame comprises two first connecting columns which are symmetrically arranged, one end of each first connecting column is fixedly connected with the fourth connecting frame, the other end of each first connecting column is vertically provided with a connecting pipe, and one end of the outer surface of each connecting pipe, which is far away from the first connecting column, is fixedly provided with a first connecting plate;

a second connecting column is slidably mounted at the lower end inside the connecting tube, a third connecting column is vertically mounted at one end, far away from the connecting tube, of the second connecting column, one end, far away from the second connecting column, of the third connecting column is fixedly connected with a third connecting frame, and a second connecting plate is fixedly mounted at one end, close to the connecting tube, of the outer surface of the second connecting column;

first threaded holes are formed in the front end and the rear end of the top surface of the first connecting plate, first bolts are connected with the first threaded holes in an internal thread mode, and second threaded holes matched with the first bolts are formed in the front end and the rear end of the top surface of the second connecting plate.

Furthermore, two third threaded holes which are symmetrically formed are formed in the left end and the right end of the top surface of the second mounting plate, second bolts are connected to the third threaded holes in an internal thread mode, and fourth threaded holes matched with the second bolts are formed in the left end and the right end of the lower bottom surface of the first bottom plate.

Further, the first mounting frame comprises two symmetrically-arranged third connecting plates, and a fourth connecting plate is fixedly arranged between the two third connecting plates;

the upper end and the lower end of the front side surface of the third connecting plate are both provided with adjusting holes, first adjusting columns are fixedly installed in the adjusting holes, and the rear side surfaces of the first adjusting columns are fixedly connected with the second filter box;

fifth threaded holes are formed in the left end and the right end of the top surface of the fourth connecting plate, third bolts are connected to the fifth threaded holes in an internal thread mode, and sixth threaded holes matched with the third bolts are formed in the left end and the right end of the upper side surface and the right end of the lower side surface of the square frame.

Furthermore, a fifth connecting plate is arranged in the square frame in a matched manner, and the rear side surface of the fifth connecting plate is fixedly connected with the first connecting pipeline;

the front end of the right side face of the fifth connecting plate is provided with a seventh threaded hole, a fourth bolt is connected with the seventh threaded hole in an internal thread mode, and the right side face of the square frame is provided with an eighth threaded hole matched with the fourth bolt.

Furthermore, two ninth threaded holes are formed in the left end and the right end of the top surface of the third mounting plate, fifth bolts are connected to the ninth threaded holes in an internal thread mode, and tenth threaded holes matched with the fifth bolts are formed in the left end and the right end of the top surface of the second bottom plate.

Furthermore, an eleventh threaded hole is formed in the upper end of the right side face of the U-shaped plate, a sixth bolt is connected to the eleventh threaded hole in an internal thread mode, and a twelfth threaded hole matched with the sixth bolt is formed in the front end of the outer surface of the fourth connecting column.

The utility model has the advantages that:

1. the utility model provides a chemical detection vehicle is with straining poison ventilation unit through being provided with the protection box, when in-service use, can assemble straining poison ventilation mechanism and protection box outside the cabin, and the equipment is accomplished the back, installs to the under-deck via first mounting panel.

2. The utility model provides a chemical detection vehicle is with straining poison ventilation unit through the setting of straining poison ventilation mechanism, can purify the back to the air outside the cabin and replace to discharge the cabin with the pollutant through two-way fan after the heater heating outside, the extension is strained the poison time, is favorable to going on of cabin interior personnel sampling.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is an exploded view of the local structure of the present invention;

fig. 5 is a partial structural schematic diagram of the present invention;

fig. 6 is an exploded view of a partial structure of the present invention;

fig. 7 is a partial structural schematic diagram of the present invention;

fig. 8 is an exploded view of a partial structure of the present invention;

fig. 9 is an exploded view of a partial structure of the present invention;

fig. 10 is a partial structural schematic view of the present invention;

fig. 11 is an exploded view of a partial structure of the present invention;

fig. 12 is an exploded view of a partial structure of the present invention;

fig. 13 is an exploded view of a partial structure of the present invention;

fig. 14 is an exploded view of the local structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc. indicate an orientation or positional relationship only for the convenience of description of the present invention and to simplify the description, and do not indicate or imply that the component or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the toxicity filtering and ventilating device for a chemical detection vehicle comprises two symmetrically arranged toxicity filtering and ventilating mechanisms 1 and a protective box body 2 which is arranged outside the toxicity filtering and ventilating mechanisms 1 in a matching manner, wherein the front end of the protective box body 2 is fixedly communicated with a controller 3;

the protective box body 2 has a certain heat preservation function on the internal space while protecting the internal equipment and prolonging the service life of the equipment;

the toxin filtering and ventilating mechanism 1 comprises a second filter tank 11, a first connecting pipeline 12, a first filter tank 13 and a bidirectional fan 14 which are sequentially communicated from bottom to top, wherein a second connecting pipeline 15 is fixedly communicated with one end, away from the first connecting pipeline 12, of the second filter tank 11, a trapezoidal air opening 151 is fixedly communicated with one end, away from the first connecting pipeline 12, of the second connecting pipeline 15, and a third connecting pipeline 16 is fixedly communicated with one end, away from the first filter tank 13, of the bidirectional fan 14;

a valve 152 is fixedly installed at one end of the second connecting pipeline 15 close to the trapezoidal air opening 151, and the valve 152 is electrically connected with the controller 3;

a ventilating filter disc 121 is fixedly installed in the first connecting pipeline 12, a heater 122 is fixedly installed in the center of the top of the ventilating filter disc 121, a temperature sensor 123 is fixedly installed at the left end of the top surface of the ventilating filter disc 121, and the temperature sensor 123 and the heater 122 are in signal connection with the controller 3;

through the arrangement, the heater 122 is used for heating the second filter tank 11 and the first filter tank 13 at the upper end and the lower end, so that pollutants in the second filter tank 11 and the first filter tank 13 are activated and are discharged out of the cabin through the bidirectional fan 14, and the heater 122 is used for monitoring the temperature of the second filter tank 11 and the first filter tank 13 to prevent the second filter tank 11 and the first filter tank 13 from being damaged due to overhigh temperature;

the specific protection process comprises the following steps: two filtering and ventilating devices are installed in the chemical detection vehicle, one filtering and ventilating device is used for conveying polluted air into the first filter box 13 and the second filter box 11 through the bidirectional fan 14, after adsorption is carried out, the treated air enters the cabin, and the other filtering and ventilating device discharges the air in the vehicle out of the cabin.

As shown in fig. 5 to 9, the protective box body 2 includes a first carrying box 21 and a second carrying box 23 which are symmetrically arranged, a plurality of first connecting frames 24 are cooperatively placed between the first carrying box 21 and the second carrying box 23, a sealing gasket 25 is cooperatively placed between two adjacent first connecting frames 24, a second connecting frame 251 is fixedly installed outside the sealing gasket 25, and the first connecting frames 24 are adhesively connected in the second connecting frame 251;

the first carrying box 21 comprises a third connecting frame 211 and a first bottom plate 212 fixedly arranged at the lower end of the inner surface of the third connecting frame 211, and the left and right ends of the lower bottom surface of the first bottom plate 212 are respectively provided with a first mounting hole 2121 matched with the second connecting pipeline 15;

the second bearing box 23 comprises a fourth connecting frame 231 and a second bottom plate 232 fixedly mounted at the upper end of the inner surface of the fourth connecting frame 231, and second mounting holes 2321 matched with the third connecting pipes 16 are formed at the left and right ends of the top surface of the second bottom plate 232;

first mounting plates 2311 are fixedly mounted at the upper ends of the left side surface and the right side surface of the fourth connecting frame 231, and third mounting holes 2312 are formed in the front end and the rear end of the top surface of each first mounting plate 2311;

a fourth mounting hole 2313 is formed in the center of the top surface of the first mounting plate 2311, a differential pressure meter 2314 is installed in the fourth mounting hole 2313 in a matched mode, and the differential pressure meter 2314 is in signal connection with the controller 3;

through the arrangement, the first mounting plate 2311 is arranged, so that the toxin filtering and ventilating device is conveniently mounted in a chemical detection vehicle, and the device is convenient and reliable to assemble, time-saving and labor-saving; a differential pressure gauge 2314 is arranged for measuring the differential pressure inside and outside the vehicle during actual use;

the centers of the left side surface and the right side surface of the fourth connecting frame 231 are both fixedly provided with connecting frames 26, and one end of each connecting frame 26 far away from the fourth connecting frame 231 is fixedly connected with the third connecting frame 211;

the connecting frame 26 comprises two first connecting columns 261 which are symmetrically arranged, one end of each first connecting column 261 is fixedly connected with the fourth connecting frame 231, the other end of each first connecting column 261 is vertically provided with a connecting pipe 262, and one end of the outer surface of each connecting pipe 262, which is far away from the first connecting column 261, is fixedly provided with a first connecting plate 263;

a second connecting column 264 is slidably mounted at the lower end inside the connecting tube 262, a third connecting column 265 is vertically mounted at one end, far away from the connecting tube 262, of the second connecting column 264, one end, far away from the second connecting column 264, of the third connecting column 265 is fixedly connected with the third connecting frame 211, and a second connecting plate 266 is fixedly mounted at one end, close to the connecting tube 262, of the outer surface of the second connecting column 264;

first threaded holes 2631 are formed in the front and rear ends of the top surface of the first connecting plate 263, first bolts 2632 are connected to the first threaded holes 2631 in an internal thread manner, and second threaded holes 2661 matched with the first bolts 2632 are formed in the front and rear ends of the top surface of the second connecting plate 266;

by this arrangement, the first carrying case 21 and the second carrying case 23 and the plurality of first connection frames 24 are connected and fixed.

As shown in fig. 10 to 14, a second mounting plate 111 is fixedly mounted at the lower end of the outer surface of the second filter tank 11, first mounting frames 112 are fixedly mounted on both front and rear side surfaces of the second filter tank 11, a square frame 113 is mounted on the top of the first mounting frame 112 in a matching manner, a second mounting frame 114 is mounted on one end, away from the first mounting frame 112, of the square frame 113 in a matching manner, the second mounting frame 114 has the same structure as the first mounting frame 112, and the second mounting frame 114 is fixedly mounted at the front end of the first filter tank 13;

the left end and the right end of the top surface of the second mounting plate 111 are both provided with two symmetrically-arranged third threaded holes 1111, the third threaded holes 1111 are in threaded connection with second bolts 1112, and the left end and the right end of the lower bottom surface of the first bottom plate 212 are both provided with fourth threaded holes 2122 matched with the second bolts 1112;

with this arrangement, the second mounting plate 111 is fixed to the top of the first base plate 212;

the first mounting bracket 112 includes two symmetrically-arranged third connecting plates 1121, and a fourth connecting plate 1122 is fixedly installed between the two third connecting plates 1121;

the upper end and the lower end of the front side of the third connecting plate 1121 are both provided with adjusting holes 1123, a first adjusting column 1124 is fixedly arranged in each adjusting hole 1123, and the rear side of each first adjusting column 1124 is fixedly connected with the second filter tank 11;

the left end and the right end of the top surface of the fourth connecting plate 1122 are both provided with fifth threaded holes 1125, the fifth threaded holes 1125 are in threaded connection with third bolts 1126, and the left end and the right end of the upper side surface and the lower side surface of the square frame 113 are both provided with sixth threaded holes 1131 matched with the third bolts 1126;

a fifth connecting plate 1132 is arranged in the square frame 113 in a matching manner, and the rear side surface of the fifth connecting plate 1132 is fixedly connected with the first connecting pipeline 12;

a seventh threaded hole 1133 is formed in the front end of the right side of the fifth connecting plate 1132, a fourth bolt 1134 is connected to the seventh threaded hole 1133 through internal threads, and an eighth threaded hole 1135 matched with the fourth bolt 1134 is formed in the right side of the square frame 113;

by this arrangement, the second filtering tank 11, the first connecting pipe 12, and the first filtering tank 13 are connected and also detachable;

a third mounting plate 141 is fixedly mounted at the upper end of the outer surface of the bidirectional fan 14, fourth connecting columns 142 are fixedly mounted at the front end and the rear end of the bidirectional fan 14, a U-shaped plate 143 is mounted at the front end of the outer surface of each fourth connecting column 142 in a matched manner, and the closed end of each U-shaped plate 143 is fixedly connected with the second mounting frame 114;

the left end and the right end of the top surface of the third mounting plate 141 are both provided with two ninth threaded holes 1411, the ninth threaded holes 1411 are in threaded connection with a fifth bolt 1412, and the left end and the right end of the top surface of the second base plate 232 are both provided with tenth threaded holes 2322 matched with the fifth bolt 1412;

an eleventh threaded hole 1431 is formed in the upper end of the right side face of the U-shaped plate 143, a sixth bolt 1432 is connected to the eleventh threaded hole 1431 in an internal thread manner, and a twelfth threaded hole 1421 matched with the sixth bolt 1432 is formed in the front end of the outer surface of the fourth connecting column 142;

through this kind of setting, can install third mounting panel 141 to second bottom plate 232 bottom surface down, dismouting simple and convenient.

In this context, the controller 3 is a known PLC programmable controller; the bidirectional fan 14 is a known conventional bidirectional fan; the second filter tank 11 and the first filter tank 13 are both known conventional poison filtering tanks; the valve 152 is a known conventional solenoid valve; the heater 122 is a known conventional type heater; the temperature sensor 123 is a known conventional type temperature sensor; the differential pressure gauge 2314 is a known conventional differential pressure gauge.

During the actual installation uses, can assemble each part of straining poison ventilation mechanism 1 earlier, form and accomplish the back, arrange protection box 2 in, each part adhesion is connected in the protection box 2, tentatively fixes, will strain second mounting panel 111 and the third mounting panel 141 in the poison ventilation mechanism 1 and install to protection box 2 in, protect fixedly, rethread link 26 is further fixed.

In the actual use process, the poison filtering and ventilating mechanism 1 and the protective box body 2 can be assembled outside the cabin by arranging the protective box body 2, and the poison filtering and ventilating mechanism and the protective box body 2 are installed in the cabin through the first installation plate 2311 after the assembly is finished; through the setting of filtering poison ventilation mechanism 1, can purify the back replacement to the air outside the cabin to discharge the outboard through two-way fan 14 after heating the pollutant via heater 122, the extension is filtered the poison time, is favorable to going on of cabin personnel sampling.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims (9)

1. The utility model provides a chemistry detects automobile-used toxin filtering ventilation unit which characterized in that: the device comprises two symmetrically-arranged toxin filtering and ventilating mechanisms (1) and a protective box body (2) which is arranged outside the toxin filtering and ventilating mechanisms (1) in a matching way, wherein the front end of the protective box body (2) is fixedly communicated with a controller (3);

the toxin filtering and ventilating mechanism (1) comprises a second filter box (11), a first connecting pipeline (12), a first filter box (13) and a bidirectional fan (14) which are sequentially communicated from bottom to top, wherein a second connecting pipeline (15) is fixedly communicated with one end, away from the first connecting pipeline (12), of the second filter box (11), a trapezoidal air opening (151) is fixedly communicated with one end, away from the first connecting pipeline (12), of the second connecting pipeline (15), and a third connecting pipeline (16) is fixedly communicated with one end, away from the first filter box (13), of the bidirectional fan (14);

a ventilating filter disc (121) is fixedly mounted in the first connecting pipeline (12), a heater (122) is fixedly mounted in the center of the top of the ventilating filter disc (121), a temperature sensor (123) is fixedly mounted at the left end of the top surface of the ventilating filter disc (121), and the temperature sensor (123) and the heater (122) are in signal connection with the controller (3);

the protective box body (2) comprises a first bearing box (21) and a second bearing box (23) which are symmetrically arranged, a plurality of first connecting frames (24) are arranged between the first bearing box (21) and the second bearing box (23) in a matched mode, a sealing gasket (25) is arranged between every two adjacent first connecting frames (24) in a matched mode, a second connecting frame (251) is fixedly installed on the outer portion of the sealing gasket (25), and the first connecting frames (24) are connected into the second connecting frame (251) in an adhesion mode;

the first bearing box (21) comprises a third connecting frame (211) and a first bottom plate (212) fixedly mounted at the lower end of the inner surface of the third connecting frame (211), and first mounting holes (2121) matched with the second connecting pipelines (15) are formed in the left end and the right end of the lower bottom surface of the first bottom plate (212);

the second bearing box (23) comprises a fourth connecting frame (231) and a second bottom plate (232) fixedly installed at the upper end of the inner surface of the fourth connecting frame (231), and second installation holes (2321) matched with the third connecting pipelines (16) are formed in the left end and the right end of the top surface of the second bottom plate (232);

the centers of the left side surface and the right side surface of the fourth connecting frame (231) are fixedly provided with connecting frames (26), and one end, far away from the fourth connecting frame (231), of each connecting frame (26) is fixedly connected with the third connecting frame (211);

a second mounting plate (111) is fixedly mounted at the lower end of the outer surface of the second filtering box (11), first mounting frames (112) are fixedly mounted on the front side surface and the rear side surface of the second filtering box (11), a square frame (113) is mounted at the top of the first mounting frame (112) in a matching manner, a second mounting frame (114) is mounted at one end, away from the first mounting frame (112), of the square frame (113) in a matching manner, the second mounting frame (114) is identical in structure to the first mounting frame (112), and the second mounting frame (114) is fixedly mounted at the front end of the first filtering box (13);

two-way fan (14) surface upper end fixed mounting has third mounting panel (141), the equal fixed mounting in both ends has fourth spliced pole (142) around two-way fan (14), U template (143) is installed in fourth spliced pole (142) surface front end cooperation, the blind end and second mounting bracket (114) fixed connection of U template (143).

2. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: and a valve (152) is fixedly mounted at one end, close to the trapezoidal air opening (151), of the second connecting pipeline (15), and the valve (152) is electrically connected with the controller (3).

3. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: first mounting plates (2311) are fixedly mounted at the upper ends of the left side surface and the right side surface of the fourth connecting frame (231), and third mounting holes (2312) are formed in the front end and the rear end of the top surface of each first mounting plate (2311);

the center of the top surface of the first mounting plate (2311) is provided with a fourth mounting hole (2313), a differential pressure meter (2314) is installed in the fourth mounting hole (2313) in a matched mode, and the differential pressure meter (2314) is in signal connection with the controller (3).

4. The toxic substance filtering and ventilating device for chemical detection vehicles according to claim 1, wherein: the connecting frame (26) comprises two first connecting columns (261) which are symmetrically arranged, one end of each first connecting column (261) is fixedly connected with the fourth connecting frame (231), the other end of each first connecting column (261) is vertically provided with a connecting pipe (262), and one end, far away from the first connecting column (261), of the outer surface of each connecting pipe (262) is fixedly provided with a first connecting plate (263);

a second connecting column (264) is slidably mounted at the lower end inside the connecting tube (262), a third connecting column (265) is vertically mounted at one end, far away from the connecting tube (262), of the second connecting column (264), one end, far away from the second connecting column (264), of the third connecting column (265) is fixedly connected with a third connecting frame (211), and a second connecting plate (266) is fixedly mounted at one end, close to the connecting tube (262), of the outer surface of the second connecting column (264);

first screw hole (2631) have all been opened at first connecting plate (263) top surface front and back both ends, first screw hole (2631) female connection has first bolt (2632), second connecting plate (266) top surface front and back both ends all are opened has second screw hole (2661) with first bolt (2632) matched with.

5. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: the left end and the right end of the top surface of the second mounting plate (111) are provided with two third threaded holes (1111) which are symmetrically arranged, the third threaded holes (1111) are in threaded connection with second bolts (1112), and the left end and the right end of the lower bottom surface of the first bottom plate (212) are provided with fourth threaded holes (2122) matched with the second bolts (1112).

6. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: the first mounting frame (112) comprises two symmetrically-arranged third connecting plates (1121), and a fourth connecting plate (1122) is fixedly arranged between the two third connecting plates (1121);

the upper end and the lower end of the front side surface of the third connecting plate (1121) are provided with adjusting holes (1123), a first adjusting column (1124) is fixedly installed in each adjusting hole (1123), and the rear side surface of the first adjusting column (1124) is fixedly connected with the second filter box (11);

fifth screw hole (1125) have all been opened at both ends about fourth connecting plate (1122) top surface, fifth screw hole (1125) female connection has third bolt (1126), both ends all are opened with third bolt (1126) matched with sixth screw hole (1131) about the square frame (113) upper and lower both sides face.

7. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: a fifth connecting plate (1132) is arranged in the square frame (113) in a matched mode, and the rear side face of the fifth connecting plate (1132) is fixedly connected with the first connecting pipeline (12);

fifth connecting plate (1132) right side front end is opened has seventh screw hole (1133), seventh screw hole (1133) internal thread connection has fourth bolt (1134), square frame (113) right flank is opened has eighth screw hole (1135) with fourth bolt (1134) matched with.

8. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: two ninth threaded holes (1411) are formed in the left end and the right end of the top surface of the third mounting plate (141), a fifth bolt (1412) is connected to the ninth threaded holes (1411) in an internal thread mode, and a tenth threaded hole (2322) matched with the fifth bolt (1412) is formed in the left end and the right end of the top surface of the second base plate (232).

9. The toxicity filtering and ventilating device for a chemical detection vehicle according to claim 1, wherein: an eleventh threaded hole (1431) is formed in the upper end of the right side face of the U-shaped plate (143), a sixth bolt (1432) is connected to the eleventh threaded hole (1431) in an internal thread mode, and a twelfth threaded hole (1421) matched with the sixth bolt (1432) is formed in the front end of the outer surface of the fourth connecting column (142).

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